$OpenBSD: patch-src_BaseSocket_hpp,v 1.1 2017/05/03 19:54:23 jca Exp $
--- src/BaseSocket.hpp.orig
+++ src/BaseSocket.hpp
@@ -13,6 +13,7 @@
 #include <string>
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/select.h>
 #include <sys/un.h>
 #include <exception>
 #include <netinet/in.h>
